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FIG. 19 – EXPLODED VIEW, PRV AND OIL SEAL ASSEMBLY
through the lubrication system. If particles are
present in the sump and seal reservoir, inspect
and flush the entire lubrication system.
Some slight radial wear could be normal, if at
6 o'clock on an old machine. This is the grav-
ity position of the rotor. Misalignment can
cause radial wear at any point.
A grey or white residue may indicate that wa-
ter or another contaminate was in the lubrica-
tion oil at some time.
REPLACING SUCTION END JOURNAL BEARING
To replace the suction end journal bearing:
1. Reinstall drive shaft if previously removed.
2. Examine bearing for nicks and burrs. Carefully re-
move all sharp edges with a scraper. Coat the bear-
ing O.D. and housing ID with oil. Coat the bearing
ID and the shaft journal with Molycote and oil.
Clean the drive shaft and tape the threaded area.
Do not force the bearing into position.
It must slip in easily. The bearing and
housing should be at the same tem-
perature when assembling.
YORK INTERNATIONAL
3. Slip the bearing over the drive shaft and screw the
bearing puller rods into the bearing. Line up the
bearing slot with the locating pin and push the bear-
ing into position. Raise the shaft slightly to ease
installation.
4. Use the snap ring pliers to place the snap ring into
the groove in front of the bearing and lock it into
place.
5. Replace the shaft seal (refer to Installing the New
Shaft Seal, and Alignment Instruction Form 160.71-
N2). Check the coupling alignment and realign if
necessary.
6. Evacuate and test the unit per instructions.
7. Charge unit with oil of proper designation.
8. Transfer refrigerant from the receiver to the unit
and check for refrigerant leaks.
REMOVING SUCTION END OIL SEAL
If not already prepared see Preparation for Service, and
follow safety precautions. To remove the suction end
oil seal (19), refer to Fig. 19 and proceed as follows:
1. Remove the compressor drive shaft, (See Remov-
ing Compressor Drive Shaft).
FORM 220.11-NM2 (602)
4
LD07334
43
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